Differential D9423 Diff 28208 src/avalanche/peermanager.cpp

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src/avalanche/peermanager.cpp

// Copyright (c) 2020 The Bitcoin developers		// Copyright (c) 2020 The Bitcoin developers
// Distributed under the MIT software license, see the accompanying		// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.		// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <avalanche/peermanager.h>		#include <avalanche/peermanager.h>

#include <avalanche/delegation.h>		#include <avalanche/delegation.h>
#include <avalanche/validation.h>		#include <avalanche/validation.h>
#include <random.h>		#include <random.h>
#include <validation.h> // For ChainstateActive()		#include <validation.h> // For ChainstateActive()

#include <cassert>		#include <cassert>

namespace avalanche {		namespace avalanche {

		PeerManager::PeerManager()
		: rejectedProofs(
		// This is the same rolling bloom filter as for transactions.
		std::make_unique<CRollingBloomFilter>(120000, 0.000001)) {}

bool PeerManager::addNode(NodeId nodeid, const Proof &proof,		bool PeerManager::addNode(NodeId nodeid, const Proof &proof,
const Delegation &delegation) {		const Delegation &delegation) {
auto it = fetchOrCreatePeer(proof);		auto it = fetchOrCreatePeer(proof);
if (it == peers.end()) {		if (it == peers.end()) {
return false;		return false;
}		}

const PeerId peerid = it->peerid;		const PeerId peerid = it->peerid;
▲ Show 20 Lines • Show All 142 Lines • ▼ Show 20 Lines	void PeerManager::updatedBlockTip() {
{		{
LOCK(cs_main);		LOCK(cs_main);

const CCoinsViewCache &coins = ::ChainstateActive().CoinsTip();		const CCoinsViewCache &coins = ::ChainstateActive().CoinsTip();
for (const auto &p : peers) {		for (const auto &p : peers) {
ProofValidationState state;		ProofValidationState state;
if (!p.proof.verify(state, coins)) {		if (!p.proof.verify(state, coins)) {
invalidPeers.push_back(p.peerid);		invalidPeers.push_back(p.peerid);
		if (state.GetResult() != ProofValidationResult::MISSING_UTXO) {
		rejectedProofs->insert(p.proof.getId());
		}
}		}
}		}
}		}

for (const auto &pid : invalidPeers) {		for (const auto &pid : invalidPeers) {
removePeer(pid);		removePeer(pid);
}		}
}		}
Show All 9 Lines	PeerManager::fetchOrCreatePeer(const Proof &proof) {
// Check if we already know of that peer.		// Check if we already know of that peer.
auto &pview = peers.get<proof_index>();		auto &pview = peers.get<proof_index>();
auto it = pview.find(proof.getId());		auto it = pview.find(proof.getId());
if (it != pview.end()) {		if (it != pview.end()) {
return peers.project<0>(it);		return peers.project<0>(it);
}		}
}		}

		if (rejectedProofs->contains(proof.getId())) {
		return peers.end();
		}

{		{
// Reject invalid proof.		// Reject invalid proof.
LOCK(cs_main);		LOCK(cs_main);
const CCoinsViewCache &coins = ::ChainstateActive().CoinsTip();		const CCoinsViewCache &coins = ::ChainstateActive().CoinsTip();

ProofValidationState state;		ProofValidationState state;
if (!proof.verify(state, coins)) {		if (!proof.verify(state, coins)) {
		if (state.GetResult() != ProofValidationResult::MISSING_UTXO) {
		rejectedProofs->insert(proof.getId());
		}
return peers.end();		return peers.end();
}		}
}		}

// New peer means new peerid!		// New peer means new peerid!
const PeerId peerid = nextPeerId++;		const PeerId peerid = nextPeerId++;

// Attach UTXOs to this proof.		// Attach UTXOs to this proof.
▲ Show 20 Lines • Show All 237 Lines • ▼ Show 20 Lines	std::vector<NodeId> PeerManager::getNodeIdsForPeer(PeerId peerId) const {
auto &nview = nodes.get<next_request_time>();		auto &nview = nodes.get<next_request_time>();
auto nodeRange = nview.equal_range(peerId);		auto nodeRange = nview.equal_range(peerId);
for (auto it = nodeRange.first; it != nodeRange.second; ++it) {		for (auto it = nodeRange.first; it != nodeRange.second; ++it) {
nodeids.emplace_back(it->nodeid);		nodeids.emplace_back(it->nodeid);
}		}
return nodeids;		return nodeids;
}		}

		void PeerManager::rejectProof(ProofId proofId) {
		rejectedProofs->insert(proofId);
		}

} // namespace avalanche		} // namespace avalanche